I am walking around the house, getting ready to take some raunchy pics... thinking I am home alone when I walk in on my little brother jerking off. I am surprised, but I tease him about it before I realise he is watching brother/sister porn! I continue teasing but involve my body too now, as we go I also get horny, rubbing his cock on my pussy and between my thighs. I get brain fog from feeling intense lust toward my brother and I slip just the tip in before I give in and tell him to fuck me. I realise he is a virgin but I don't care at this point. I tell him to pull out when he is going to cum because I am not on birth control, but when he gets too close, I want it too bad. The taboo of it all is making me insanely horny. I start begging for him to cum inside me, for him to breed his sister's wanting wet pussy! I want to feel my brother's cum inside me. Watch your cum leak out of your fertile sister's pussy.